Born in Bristol, Webb was self-taught as a pianist, and first began performing during his national service with the Royal Air Force in Egypt.
At the same time Webb was working as a music director for West End theatres and was involved in the hit London production The Lord Chamberlain Regrets (1961) among other shows.
[3] He worked with Vera Lynn, Bette Davis, Rex Harrison, Johnny Mathis, Shirley Bassey, Danny Williams and others.
[5] His film work included music for movies such as One Brief Summer (1970), Bartleby (1970), Burke & Hare (1971), Au Pair Girls (1972), Bedtime with Rosie (1974),[6] The Amorous Milkman (1975), Intimate Games (1976), What's Up Nurse!
[7] His TV work includes the opening themes of Strange Report, Miss Jones and Son, Hammer House of Horror, The Gentle Touch and Paradise Postponed, and the opening theme used from series 2 onwards of George and Mildred, as well as incidental music for Love Thy Neighbour, Minder and The Sweeney.